Bulk UUID Generator (Copy to Clipboard or CSV)
Generate thousands of UUIDs (v4) instantly. Copy to clipboard, download as CSV, or export for SQL. Perfect for testing, development, and seeding databases.
Bulk UUID Generator Tool
Generate hundreds or thousands of UUIDs (v4) instantly. Perfect for:
- •Database Primary Keys: Generate unique IDs for PostgreSQL or MySQL UUID columns.
- •API Testing: Create unique identifiers for testing REST APIs and GraphQL mutations.
- •Seed Data: Generate UUIDs for database seed files and test fixtures.
- •Mock Data: Create realistic unique identifiers for prototypes and demos.
Example Output
Plain Text (Copy to Clipboard):
550e8400-e29b-41d4-a716-446655440000 6ba7b810-9dad-11d1-80b4-00c04fd430c8 7c9e6679-7425-40de-944b-e07fc1f90ae7 a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11 f47ac10b-58cc-4372-a567-0e02b2c3d479
SQL-Ready Format:
'550e8400-e29b-41d4-a716-446655440000', '6ba7b810-9dad-11d1-80b4-00c04fd430c8', '7c9e6679-7425-40de-944b-e07fc1f90ae7', 'a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11', 'f47ac10b-58cc-4372-a567-0e02b2c3d479'
CSV Format:
uuid 550e8400-e29b-41d4-a716-446655440000 6ba7b810-9dad-11d1-80b4-00c04fd430c8 7c9e6679-7425-40de-944b-e07fc1f90ae7 a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11 f47ac10b-58cc-4372-a567-0e02b2c3d479
Common Use Cases
🗄️ PostgreSQL Primary Keys
Generate UUIDs for PostgreSQL tables:
CREATE TABLE users (
id UUID PRIMARY KEY,
name TEXT
);
INSERT INTO users (id, name) VALUES
('550e8400-...', 'John Doe');🔗 Foreign Key Testing
Generate UUIDs for relationship testing:
INSERT INTO orders (id, user_id) VALUES
('7c9e6679-...', '550e8400-...'),
('a0eebc99-...', '550e8400-...');🧪 API Testing
Use UUIDs in API test fixtures:
const testUsers = [
{ id: '550e8400-...', name: 'Test User' },
{ id: '6ba7b810-...', name: 'Another User' }
];📦 Data Migration
Generate UUIDs for data migration scripts:
UPDATE legacy_table SET new_uuid = '550e8400-...' WHERE id = 1;
Why Use UUIDs?
🌐 Distributed Systems
Generate IDs on any machine without coordination. Perfect for microservices and distributed databases.
🔒 Security & Privacy
UUIDs don't reveal information about your data or system. Unlike sequential IDs, they can't be guessed or enumerated.
🔄 Merge-Friendly
Merge data from multiple sources without ID conflicts. Perfect for offline-first apps and data synchronization.
📊 URL-Safe Identifiers
Use UUIDs in URLs and APIs without exposing sequential patterns or revealing database size.
How to Use This Tool
- 1.Choose Quantity: Enter how many UUIDs you need (1 to 10,000+).
- 2.Generate: Click generate and MockBlast creates UUIDs instantly using cryptographically strong random generation.
- 3.Export: Copy to clipboard, download as CSV, or get SQL-ready format.
- 4.Use Anywhere: Paste into your code, database, or API tests.
Frequently Asked Questions
- What is a UUID and why use UUID v4?
- UUID (Universally Unique Identifier) is a 128-bit value used as a unique identifier. UUID v4 is randomly generated and is the most common type for database primary keys. It's ideal for distributed systems where IDs need to be generated without coordination.
- How many UUIDs can I generate at once?
- MockBlast can generate thousands of UUIDs instantly. Whether you need 10 or 10,000 UUIDs, they're generated in milliseconds and ready to copy or download.
- Are the UUIDs truly unique?
- Yes! UUID v4 uses cryptographically strong random number generation. The probability of collision is astronomically low (1 in 2^122), making them effectively unique.
- Can I use these UUIDs for database primary keys?
- Absolutely! These UUIDs are perfect for PostgreSQL, MySQL, or any database that supports UUID types. You can copy them directly into your SQL INSERT statements or seed files.
- What formats are available for download?
- You can copy UUIDs to clipboard as a simple list, download as CSV, or export as SQL-ready values (wrapped in quotes and comma-separated). Perfect for various use cases.